/*
* Copyright ( c ) 2012 , 2022 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
#ifndef OS_WINDOWS_PDH_INTERFACE_HPP
#define OS_WINDOWS_PDH_INTERFACE_HPP
#include "memory/allStatic.hpp"
#include <pdh.h>
#include <pdhmsg.h>
class PdhDll: public AllStatic {
private :
static LONG _pdh_reference_count;
static LONG _critical_section;
static LONG _initialized;
static HMODULE _hModule;
static void initialize();
static PDH_STATUS (WINAPI *_PdhAddCounter)(HQUERY, LPCSTR, DWORD, HCOUNTER*);
static PDH_STATUS (WINAPI *_PdhOpenQuery)(LPCWSTR, DWORD, HQUERY*);
static DWORD (WINAPI *_PdhCloseQuery)(HQUERY);
static PDH_STATUS (WINAPI *_PdhCollectQueryData)(HQUERY);
static DWORD (WINAPI *_PdhGetFormattedCounterValue)(HCOUNTER, DWORD, LPDWORD, PPDH_FMT_COUNTERVALUE);
static PDH_STATUS (WINAPI *_PdhEnumObjectItems)(LPCTSTR, LPCTSTR, LPCTSTR, LPTSTR, LPDWORD, LPTSTR, LPDWORD, DWORD, DWORD);
static PDH_STATUS (WINAPI *_PdhRemoveCounter)(HCOUNTER);
static PDH_STATUS (WINAPI *_PdhLookupPerfNameByIndex)(LPCSTR, DWORD, LPSTR, LPDWORD);
static PDH_STATUS (WINAPI *_PdhMakeCounterPath)(PPDH_COUNTER_PATH_ELEMENTS, LPTSTR, LPDWORD, DWORD);
static PDH_STATUS (WINAPI *_PdhExpandWildCardPath)(LPCSTR, LPCSTR, PZZSTR, LPDWORD, DWORD);
public :
static PDH_STATUS PdhAddCounter(HQUERY, LPCSTR, DWORD, HCOUNTER*);
static PDH_STATUS PdhOpenQuery(LPCWSTR, DWORD, HQUERY*);
static DWORD PdhCloseQuery(HQUERY);
static PDH_STATUS PdhCollectQueryData(HQUERY);
static DWORD PdhGetFormattedCounterValue(HCOUNTER, DWORD, LPDWORD, PPDH_FMT_COUNTERVALUE);
static PDH_STATUS PdhEnumObjectItems(LPCTSTR, LPCTSTR, LPCTSTR, LPTSTR, LPDWORD, LPTSTR, LPDWORD, DWORD, DWORD);
static PDH_STATUS PdhRemoveCounter(HCOUNTER);
static PDH_STATUS PdhLookupPerfNameByIndex(LPCSTR, DWORD, LPSTR, LPDWORD);
static PDH_STATUS PdhMakeCounterPath(PPDH_COUNTER_PATH_ELEMENTS, LPTSTR, LPDWORD, DWORD);
static PDH_STATUS PdhExpandWildCardPath(LPCSTR, LPCSTR, PZZSTR, LPDWORD, DWORD);
static bool PdhStatusFail(PDH_STATUS pdhStat);
static bool PdhAttach();
static bool PdhDetach();
};
#endif // OS_WINDOWS_PDH_INTERFACE_HPP
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